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Luc Anselin is Professor
of Agricultural and Consumer Economics at the University of
Illinois, Urbana-Champaign, holds appointments in the Department
of Economics and the Department of Geography, and is Senior
Research Professor at the Regional Economics Applications
Laboratory (REAL). He is a member of the National Consortium
on Violence Research, is on the faculty of the Summer Program
in Quantitative Methods of the Interuniversity Consortium
on Political and Social Research (ICPSR), and serves on the
Executive Committee of the Center for Spatially Integrated
Social Science (CSISS). His research deals with the development,
software implementation and application of spatial analytical
methods to social science research questions, with a focus
on exploratory spatial data analysis and spatial econometrics.
Dr. Anselin is also the developer of the SpaceStat™
software packages for spatial data analysis. He is an editor
of the International Regional Science Review and serves on
six other journal editorial boards in regional science and
analytical geography.

Paul Bélanger
is a geography graduate of the University of Victoria, British
Columbia, and the University of Kentucky (M.A.). He received
his Ph.D. in geography from the University at Buffalo - The
State University of New York, in 2002. His research interests
are in political geography, the electoral geography of Canada,
and the application of spatial and GIS-based analysis to the
study of political behavior. He has written on electoral districting,
the geography of campaign tours, voter turnout, and party
financing.

Itzhak Benenson is
a Senior Lecturer at the Department of Geography and Human
Environment, Tel Aviv University. His scientific interests
include theoretical and applied urban, social, and ecological
modeling and simulation, GIS and its applications in archaeology,
social science, demography, urban studies and management,
software for agent-based simulation, spatial analysis, and
data mining. He is a Deputy Head of the Environmental Simulation
Laboratory of the Porter School of Environmental Studies University
Tel Aviv, Head of the GIS Special Interest Group of the Israeli
Geographic Society.

Brian J.L. Berry is
Lloyd Viel Berkner Regental Professor and Professor of Political
Economy at the University of Texas at Dallas. He received
his B.Sc. (Economics) degree at University College, London
in 1955, the M.A. in geography from the University of Washington
in 1956 and the Ph.D. in 1958. He was a faculty member at
the University of Chicago (1958-1976), where he chaired the
geography department and directed the Center for Urban Studies;
at Harvard (1976-1981), where he chaired the doctoral program
in urban planning and directed the Laboratory for Computer
Graphics and Spatial Analysis; and at Carnegie-Mellon (1981-1986),
where he was dean of the Heinz School of Public Policy and
Management. He joined UTD in 1986, and was the founding director
of the Bruton Center for Development Studies. The author of
more than 500 books and articles, he was the most-cited geographer
for more than 25 years from the early 1960s. In his work he
has attempted to bridge theory and practice via involvement
in development activities in both advanced and developing
countries. When elected to the National Academy of Sciences
in 1975 he was the youngest social scientist so honored. Among
others he also is a fellow of the British Academy and of the
American Academy of Arts and Sciences and received the Victoria
Medal from the Royal Geographical Society in 1988. In 1999
he was elected a member of the Council of the National Academy
of Sciences, the first geographer to be so honored.

Bruce W. Boucek received
both B.A. and M.A. degrees in geography from Temple University
in Philadelphia. He is currently a graduate research assistant
at the Anthropological Center for Training and Research on
Global Environmental Change (ACT) and a Ph.D. student in the
Department of Geography at Indiana University. His recent
work includes prediction of deforestation at the farm property
level for ACT’s study region in the Amazon. His primary
research interest is in the link between land use and land
cover change and urbanization in the developing world. In
the past, he has also worked as a graduate research assistant
for the Center for the Study of Institutions, Population,
and Environmental Change (CIPEC) at Indiana University.

Norman M. Bradburn
is Assistant Director for the Social, Behavioral, and Economic
Sciences Directorate (SBE) of the National Science Foundation.
He is on leave from the University of Chicago where he is
the Tiffany and Margaret Blake Distinguished Service Professor
Emeritus, and Vice President and Director of Research at the
National Opinion Research Center. He served three terms as
Director of the center, from 1967 to 1992, and was Provost
of the University of Chicago from 1984 to 1989. Dr. Bradburn
pioneered applications of cognitive psychology to questionnaire
design and methodological problems in survey research. He
is a member and former chair of the Committee on National
Statistics, National Research Council/National Academy of
Sciences; and a member of the Panel to Review the Statistical
Procedures for the Decennial Census. He also is a member of
the American Academy of Arts and Sciences and the International
Statistical Institute, and a fellow of the American Statistical
Association and the American Association for the Advancement
of Science.

Ted Bradshaw received
his Ph.D. in Sociology from the University of California,
Berkeley, and currently he is an Associate Professor in the
Human and Community Development Department at the University
of California, Davis. He teaches community development and
economic development, and has recently published Planning
Local Economic Development (Third Edition, with Edward Blakely)
and journal articles on small business loan guarantees, land
use and farmland conversion in the California central valley,
complex community development organizations, and the environmental
technology industry. He is currently working on a book on
the California energy crisis. Prior to joining the faculty
at the UC Davis in 1995, Bradshaw was a Research Sociologist
at the Institute of Urban and Regional Development at UC Berkeley
where he headed a series of studies on California’s
economic development. He is the Editor of the Journal of the
Community Development Society.

Hugh Calkins is Research
Professor of Geography at the University at Buffalo –
The State University of New York, and a Research Scientist
with the National Center for Geographic Information and Analysis
(NCGIA). He received his Ph.D. in Urban Planning from the
University of Washington in 1972, and recently completed a
term as Chair of the Geography Department at UB. His primary
research involves the use and value of geographic information
in decision-making, and the use of GIS in understanding the
human and social capital stock of communities.

Gilberto Câmara
is Director for Earth Observation at INPE. He is an Eletronics
Engineer (ITA, 1979) with a Ph.D. in Computer Science (INPE,
1995). His research interests are geographical information
science, spatial databases, spatial analysis and remote sensing
image processing. He has published more than 80 full papers
in refereed journals and scientific conferences in Brazil
and abroad. He has also been the leader in the development
of GIS and image processing technology in Brazil, including
the SPRING software, freely available on the Internet.

Jacqueline Cohen is
Principal Research Scientist in the H. John Heinz III School
of Public Policy and Management at Carnegie Mellon University.
Her research, which spans thirty years, analyzes many aspects
of crime and criminal justice policy, including demographic
trends in crime and prison populations, criminal careers,
and incapacitative effects of incarceration. Her work also
examines various aspects of illegal drug use and its relationship
to violent offending, and investigations of the effectiveness
of policing strategies. Her most recent work pursues issues
relating to firearm involvement among youthful offenders,
including exploration of its links to youthful violence and
the potential effectiveness of various law enforcement strategies
pursued by local police. Dr. Cohen also has contributed to
the work of several panels convened by the National Research
Council to examine research on deterrence and incapacitation,
sentencing policy, patterns of offending during criminal careers,
and the understanding and control of violent behavior.

Patrick Daly is conducting
research at the Institute of Archaeology, University of Oxford,
focusing upon the development of cultural landscapes from
the Late Bronze Age through the Iron Age in South Central
England. As part of this research GIS has been used extensively
to explore the movement and deposition of material culture
across the landscape. His academic interests lie in landscape
archaeology, long-term regional development, material culture
and social theory, and the practical and theoretical application
of GIS in anthropology and archaeology. He has conducted fieldwork
and led teams in northern Scandinavia, Karalia, the United
Kingdom, Jordan, Syria, Peru, and Borneo. He has published
a number of papers on the use of GIS in archaeology and ethnoarchaeology,
and is currently editing a volume, Digital Archaeology, for
Routledge Press.

Munroe Eagles is an
Associate Professor of Political Science and Associate Dean
for Graduate Studies in the College of Arts and Sciences,
University at Buffalo – The State University of New
York. He is also a Research Scientist with the National Center
for Geographic Information and Analysis (NCGIA). He received
his Ph.D. in Political Science from the University of California,
Irvine, in 1988. His main research interests are in the political
and electoral geography of advanced industrial societies.

Guy Engelen is Director
of the Research Institute for Knowledge Systems in Maastricht,
The Netherlands. Following graduate work in geography at the
(Flemish) Free University of Brussels in Belgium, he worked
on spatial modeling with the interdisciplinary group headed
by Nobel prizewinner I. Prigogine in Brussels. Since coming
to Maastricht, he has built the Institute into a leading research
and consultancy group in geographical systems. Two of his
current areas of interest are the extension of geoinformatics
to encompass the effects of dynamic processes, and the development
of effective spatial decision support systems.

Edward J. Feser is an
Assistant Professor in the Department of City and Regional
Planning at the University of North Carolina at Chapel Hill,
where he teaches courses in urban and regional economics and
local development policy. His research focuses on industry
cluster analysis and policy, regional influences on process
technology adoption in manufacturing, external economies and
industrial productivity, regional distress and economic adjustment,
and the development of improved data and spatial-analytical
techniques for local development practice. The National Science
Foundation, the U.S. Economic Development Administration,
the Appalachian Regional Commission, the German Marshall Fund
of the United States, and state and local development agencies
in eight states have funded his research. He is co-author
of Understanding Local Economic Development, published by
Rutgers' CUPR Press in 1999.

Tony Gatrell is Professor
of the Geography of Health at Lancaster University, and also
Director of the Institute for Health Research, which was created
in 1996. He has a First Class Honours degree from Bristol
University and a Ph.D. from Pennsylvania State University,
where the influence of Peter Gould was considerable. He began
his career at Salford University, before subsequently moving
to Lancaster. His research interests lie primarily in geographical
epidemiology, spatial analysis, and the geography of health
care provision, but with an underlying interest in health
inequalities. He has recently written Geographies of Health:
an Introduction, published by Blackwells in 2002, and is the
author or editor of three other books and numerous research
papers. Currently, he is involved in several projects, including
‘Cultivating health’, a project that is assessing
the mental health and well-being benefits of gardening among
older people in deprived areas. Other recent and on-going
projects include: care preferences for people with cancer
and local geographies of health inequality. He hopes that
a spatial imagination informs all this work.

Michael F. Goodchild
is Professor of Geography at the University of California,
Santa Barbara and Chair of the Executive Committee of the
National Center for Geographic Information and Analysis (NCGIA)
and Director of the Center for Spatially Integrated Social
Science. He was elected member of the National Academy of
Sciences and Foreign Fellow of the Royal Society of Canada
in 2002, and holds honorary doctorates from Laval University
and Keele University. He is a past Editor of Geographical
Analysis and the current Editor of the Methods, Models, and
Geographic Information Sciences section of the Annals of the
Association of American Geographers. Dr. Goodchild is a member
of editorial boards for ten other journals and book series
and is the author of some 300 scientific papers and several
books. He was Chair of the National Research Council’s
Mapping Science Committee, and is currently a member of NRC's
Committee on Geography. His research interests center on geographic
information science, spatial analysis, the future of the library,
and uncertainty in geographic data.

Jean-Michel Guldmann
is Professor of City and Regional Planning at The Ohio State
University (OSU). He holds a Master’s degree in Industrial
and Systems Engineering from Ecole des Mines, Nancy, France,
and a Ph.D. in Urban and Regional Planning from the Technion
– Israel Institute of Technology, Haifa, Israel. He
is also a Faculty Associate at Argonne National Laboratory.
At OSU, he teaches courses in energy planning and policy,
and in quantitative methods. His research interests center
on environmental, energy, and telecommunication issues, including:
(1) the development of optimization models for air-quality
management and pollution sources location, and of statistical
models explaining pollution concentrations in urban areas;
(2) the development of management, planning, and pricing models
for natural gas utilities, and of econometric models of the
cost structure of local gas and electricity distribution networks;
and (3) the analysis of economies of scale and density of
local telephone systems, and the estimation of point-to-point
spatial interaction models of telephone traffic at the regional
and international scales. The National Science Foundation
and the Ameritech Foundation have supported his telecommunications
research.

Donald G. Janelle
is a Research Professor and Program Director for the Center
for Spatially Integrated Social Science at the University
of California, Santa Barbara. His Ph.D. in geography is from
Michigan State University. He is former Chair of the Geography
Department at the University of Western Ontario. Research
interests include urban-regional spatial-systems development
and time-space convergence, information technologies and the
transformation of social space, transportation geography,
and the time geography of cities and human activity patterns.
A recently co-edited book Information, Place, and Cyberspace:
Issues in Accessibility (Springer-Verlag, 2000) captures the
interrelationship among his research interests. He is the
North American co-leader of the STELLA Transatlantic Thematic
Network’s focus group on ICT, Innovation and the Transport
System, and he is a recipient of the Association of American
Geographer’s Ullman Award for career research contributions
to transportation geography.

John Kantner is an
Assistant Professor in the Department of Anthropology and
Geography at Georgia State University in Atlanta. He received
his doctoral degree from the University of California at Santa
Barbara in 1999, where he studied archaeology, geography,
and GIS. His research focuses on how evolutionary theory and
human behavioral ecology can help us understand the emergence
of sociopolitical differentiation and complexity. These issues
are investigated in the prehistoric Southwest, in particular
reference to the evolution of the Chaco Anasazi tradition.
Dr. Kantner employs a variety of methodological approaches
in his research, including geochemical techniques, GIS and
geographical analyses, and ceramic stylistic approaches. Publications
have appeared in Historical Archaeology, Journal of Anthropological
Archaeology, Human Nature, and in numerous edited volumes.
He recently co-edited Great House Communities Across the Chacoan
Landscape, published by University of Arizona Press, and he
is editor of the Society for American Archaeology’s
trade magazine, The SAA Archaeological Record.

Mei-Po Kwan is Associate
Professor of Geography at the Ohio State University and holds
a Ph.D. in Geography from the University of California, Santa
Barbara. She is currently an associated faculty of the Center
for Urban and Regional Analysis, and the John Glenn Institute
for Public Service and Public Policy at OSU. Dr. Kwan is Associate
Editor of Geographical Analysis and serves on the International
Editorial Advisory Board of The Canadian Geographer. She has
also served as the guest editor of special issues for Gender,
Place and Culture, Journal of Geographical Systems, and Cartographica.
Her research interests include GIS-based geocomputation and
3D geovisualization, qualitative GIS, gender/ethnic issues
in transportation and urban geography, new information technologies,
feminist methodologies, cybergeography, and cyberspatial cognition.
Her recent project explores the impact of Internet use on
women’s activity patterns in space-time and the gender
division of household labor.

Jiyeong Lee holds a Ph.D.
in Geography from the Ohio State University, and is Assistant
Professor of Geography at Minnesota State University. He received
first prizes in the Association of American Geographers GIS
Specialty Group Student Paper Competition and the Integraph
Student Award from the University Consortium of Geographic
Information Science (UCGIS). His research and teaching interests
focus on feature-based 3D GIS data models, land information
systems in urban and regional planning, internal spatial structure
of urban forms, pedestrian accessibility in 3D urban space,
and 3D urban virtual reality systems. His current project
develops a Community Geospatial Data Hub, accessed through
the Internet.

Gary Lock is a University
Lecturer in Archaeology at the University of Oxford based
in both the Institute of Archaeology and the Department for
Continuing Education. He has a long-standing interest in the
use of computers in archaeology, especially the application
of GIS to landscape studies based on his fieldwork projects
in England, Spain, and Italy. He is an editor of the Archaeological
Computing Newsletter, has published many papers, written Virtual
Pasts: using computers in archaeology (due 2003, Routledge),
Digging Numbers: elementary statistics for archaeologists
(with Mike Fletcher, 1991, Oxford University and Oxbow Books),
and has edited Archaeology and Geographic Information Systems:
a European Perspective (with Zoran Stancic, 1995, Taylor and
Francis), Beyond the Map: Archaeology and Spatial Technologies
(2000, IOS Press), and On the Theory and Practice of Archaeological
Computing (with Kayt Brown, 2000, Oxford University and Oxbow
Books).

John R. Logan is Distinguished
Professor of Sociology at the University at Albany, SUNY and
Director of the Lewis Mumford Center for Comparative Urban
and Regional Research. His books include Urban Fortunes: The
Political Economy of Place (California 1987), Beyond the City
Limits: Urban Policy and Economic Restructuring in Comparative
Perspective (Temple 1990), and The New Chinese City: Globalization
and Market Reform (Blackwell 2002). He is a member of the
editorial boards of Urban Affairs Review, Sociological Forum,
Journal of Urban Affairs, and City and Community. He also
founded and directs the Urban China Research Network, supported
by the Andrew W. Mellon Foundation.

Steven F. Messner
is Professor of Sociology and Chair at the University at Albany,
SUNY, and a member of the National Consortium on Violence
Research (NCOVR). His research has focused primarily on the
relationship between social organization and crime, with a
particular emphasis on criminal homicide. Recently, he has
been studying the spatial distribution of violent crime, social
capital and homicide rates, crime and delinquency in China,
and the situational dynamics of violence. In addition to his
publications in professional journals, he is co-author of
Crime and the American Dream (Wadsworth), Perspectives on
Crime and Deviance (Prentice Hall), Criminology: An Introduction
Using ExplorIt (MicroCase), and co-editor of Theoretical Integration
in the Study of Deviance and Crime (SUNY Press) and Crime
and Social Control in a Changing China (Greenwood Press).

Emilio F. Moran is the
James H. Rudy Professor of Anthropology at Indiana University,
Professor of Environmental Sciences, Adjunct Professor of
Geography, Director of the Anthropological Center for Training
and Research on Global Environmental Change (ACT), and co-Director
of the Center for the Study of Institutions, Population and
Environmental Change (CIPEC). He is also Lead Scientist of
the Land Use Cover Change (LUCC) Focus 1-Land Use Dynamics
Office. Dr. Moran is the author of six books, nine edited
volumes and more than 100 journal articles and book chapters.
He is trained in anthropology, tropical ecology, tropical
soil science, and remote sensing. His research has focused
on the Amazon for the past 30 years.

Jeffrey Morenoff is
an Assistant Professor of Sociology and a Faculty Associate
at both the Population Studies Center and the Survey Research
Center of the University of Michigan. His major interests
include crime, health, urban neighborhoods, and the analysis
of spatial data. He is currently conducting research on the
neighborhood context and spatial dynamics of infant health,
differences across generations of Mexican immigrants and racial/ethnic
groups in adolescent crime and problem behavior, and the systematic
social observation of urban neighborhoods.

Brian Muller is an
assistant professor at the University of Colorado at Denver.
Brian received his B.A. from Yale University and his Ph.D.
in urban and regional planning from the University of California
at Berkeley. He teaches in the areas of environmental planning,
planning methods, and spatial analysis, and his research interests
include urban and regional growth dynamics, application of
decision support systems, and environmental assessment methods.

David O'Sullivan
is an Assistant Professor of Geography at The Pennsylvania
State University. Research interests include modeling socio-spatial
phenomena, particularly urban growth and social change at
the micro-scale of parcels, blocks and neighborhoods. He is
also interested in developing methods for the detailed representation
of spatial configuration in contemporary 'complex' modeling
techniques such as cellular automata and multi-agent simulations,
while at the same time exploring the rich possibilities of
these approaches for the representation of individuals and
societies in geographical information science and systems.

Sergio J. Rey earned his
Ph.D. in Geography from the University of California, Santa
Barbara. He is an Associate Professor of Geography at the
San Diego State University and an Adjunct Associate Research
Professor at the Regional Economics Applications Laboratory
(REAL) at the University of Illinois, Urbana-Champaign. Rey's
research interests include regional economic growth and income
inequality, spatial econometrics, open source geocomputation,
integrated multiregional socioeconomic modeling, and regional
industry cluster analysis. He has published widely on these
areas in such journals as Geographical Analysis, Regional
Studies, Growth and Change, Environment and Planning A, The
International Regional Science Review, Economic Systems Research
as well as in several edited volumes. His research has been
funded from such public agencies as the U.S. Environmental
Protection Agency, the California Employment Development Department,
and the Southwest Center for Environmental Policy and Research.
In 1998 he received the Geoffrey J.D. Hewings Distinguished
Young Scholars Award from the North American Regional Science
Council. Rey is an editor of the International Regional Science
Review and he serves on the editorial boards of Geographical
Analysis and Papers in Regional Science.

Jan Rigby’s career
as a geographer began in 1990 with the M.Sc. course in GIS
at Edinburgh University. After a few years of lecturing in
GIS within a business school environment, she moved to Lancaster
University to study for a Ph.D. in breast cancer epidemiology,
which was completed in 1999. Tony Gatrell, from whom she is
still learning, supervised the work. Following lectureships
in geography departments at Bristol and Lancaster universities,
she moved to New Zealand to develop the GIS courses at Victoria
University of Wellington. She is currently working to establish
a joint health geoinformatics facility with the Ministry of
Health, aimed at public health applications of GIS. Her main
research interests are spatial epidemiology, poverty, and
the health of underserved populations.

Robert J. Sampson
is the Henry Ford II Professor of the Social Sciences in the
Department of Sociology at Harvard University. He is also
a Senior Research Fellow at the American Bar Foundation and
Scientific Director of the Project on Human Development in
Chicago Neighborhoods. His book with John Laub, Crime in the
Making: Pathways and Turning Points Through Life (Harvard,
1993), received the outstanding scholarship award from the
American Society of Criminology, the Academy of Criminal Justice
Sciences, and the Crime, Law, and Deviance Section of the
American Sociological Association. For 2002-03, Sampson was
a Fellow at the Center for Advanced Study in the Behavioral
Sciences, Stanford, California. He was formerly the Fairfax
M. Cone Distinguished Service Professor in the Department
of Sociology at the University of Chicago.

Qing Shen is Associate
Professor of Urban Studies and Planning at the University
of Maryland, College Park. He holds a Ph.D. degree in City
and Regional Planning from University of California, Berkeley.
His areas of research and teaching are urban modeling, analytical
methods, and metropolitan planning, with a special interest
in the effects of transportation, telecommunication, and information
technologies on the spatial structure of cities and regions.
Funding for his research has come from various foundations
and government agencies, including the Lincoln Institute of
Land Policy, the National Science Foundation, and the U.S.
Department of Transportation. He is the author of many scholarly
publications, which include “A Spatial Analysis of Job
Openings and Access in a U.S. Metropolitan Area, ” in
Journal of the American Planning Association; “New Telecommunications
and Residential Location Flexibility,” in Environment
and Planning A; “An Approach to Representing the Spatial
Structure of the Information Society,” in Urban Geography;
and “Spatial and Social Dimensions of Commuting”
in Journal of the American Planning Association. He was formerly
Associate Professor in the Department of Urban Studies and
Planning at MIT.

Aldaíza Sposati
is Secretary for Social Services for the City of São
Paulo and Full Professor in the Social Services Graduate School
at the Catholic University of São Paulo (PUC/SP). She
holds a Ph.D. in Social Services (PUC/SP, 1987) and a post-doctorate
at the University of Coimbra, Portugal. Her research deals
with public policies for social security, with an emphasis
on the use of census data and maps for exploring social inequalities.
She has published 10 books, and advised 6 Ph.D. and 28 Ms.C.
students at PUC/SP. Bas Straatman took a Master’s degree
in mathematics at the University of Utrecht, The Netherlands,
and has since worked with the Maastricht Technological Research
Institute for Knowledge and Systems, primarily in the area
of applications of cellular automata to spatial decision support
systems. He is currently working towards a Ph.D. in geography
at Memorial University of Newfoundland.

Bas Straatman
took a Master's degree in mathematics at the University of Utrecht, The Netherlands, and has since worked with the Maastricht Technological Research Institute for Knowledge and Systems, primarily in the area of applications of cellular automata to spatial decision support systems. He is currently working towards a Ph.D. in geography at Memorial University of Newfoundland.

Stuart H. Sweeney
is an Assistant Professor of Geography at the University of
California, Santa Barbara. He is an executive committee member
of the Center for Spatially Integrated Social Science and
a faculty affiliate/advisor for the Quantitative Methods for
Social Sciences graduate emphasis at UC Santa Barbara. His
research is broadly focused on modeling local labor market
dynamics in an interregional setting. Specific research themes
related to local labor markets include modeling occupational
migration and mobility processes, studying the economic effects
of depopulation, and modeling agglomeration as spatial point
process. He is currently engaged in research projects funded
by the U.S. Department of Labor and the National Science Foundation.

George E. Tita is an
Assistant Professor in the Department of Criminology, Law
and Society at he University of California – Irvine.
He received his Ph.D. (1999) from the Heinz School of Public
Policy and Management at Carnegie Mellon. His research interests
include the study of inter-personal violence, urban street
gangs, the intersection of social network and spatial analysis,
and the community context of crime. Dr. Tita has employed
GIS and spatial analysis in his publications focusing on the
territories of urban youth gangs, the spatial diffusion of
homicide, and the design and implementation of a gun-violence
reduction strategy within several neighborhoods of Los Angeles.
He (along with Jacqueline Cohen) has served as a guest editor
for a special edition of the Journal of Quantitative Criminology
dedicated to research examining the diffusion of violence.
Dr. Tita is also a member of the National Consortium on Violence
Research (NCOVR), a research and training center funded by
the National Science Foundation specializing in violence research.

John R. Weeks is Professor
of Geography and Director of the International Population
Center at San Diego State University. He received his A.B.
in Sociology from the University of California, Berkeley,
in 1966, his M.A. in Demography from the University of California,
Berkeley, in 1969, and his Ph.D. in Demography from the University
of California, Berkeley, in 1972. He taught at Michigan State
University for three years prior to accepting an appointment
at San Diego State University in 1974. He is the author of
the best-selling text in demography, Population: Introduction
to Concepts and Issues, which is now in its eighth edition,
and he is currently the principal investigator on a National
Science Foundation funded project that aims to integrate remotely
sensed imagery, GIS, and spatial statistical analysis into
the study of the Arab fertility transition in Egypt and Jordan.

Roger White is University
Research Professor at Memorial University of Newfoundland,
Canada, and since 1990 has also been associated with the Research
Institute for Knowledge Systems in Maastricht, the Netherlands,
as Senior Scientist. A geographer, he works primarily in the
area of urban and regional modeling, and is interested particularly
in developing new approaches to understanding the dynamics
and evolution of geographical systems.

Wenquan Zhang is a doctoral
candidate in the Department of Sociology, University at Albany,
SUNY. He is co-author of several articles on ethnic residential
patterns. His dissertation focuses on secondary migration
of Asian and Hispanic immigrants, analyzing population flows
to areas outside the traditional points of entry in the United
States.